Explore the night sky

The most used satellite tracker

ISS Detector is available on iPhone and Android

Track many other satellites

Find Hubble, HAM radio satellites, planets, comets and many more. Doppler shift calculations and transmitter frequency information is also available. All available with in-app purchases.

Follow Starlink satellite trains

Starlink satellites trains are tracked right after launch. Get your binoculars and see the satellites move is close formation. Get the Starlink and Famous Objects Extension to follow this.

Fast and Easy

Easy to use for the beginner and powerfull for the advanced user

Be surprised

When you receive a notification, get outside and watch the satellites fly by at more then 7 km/s, 25000 km/h, 4.3 mile per second, 15534 mph

See for yourself

ISS Detector can help you to figure out when and where the International Space Station will fly by. Set up your photo gear to create beautiful pictures.